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Anybody tried constrained_min in 5.1 yet ? [message #11648]

Wed, 20 May 1998 00:00

Karl Young
Messages: 31
Registered: April 1996

Member

I tried the example given in the help file (including fixing the
typo re. argument order in constrained_min call in the
example) for constrained_min and it crashes IDL (5.1) under
NT 4.0. Anybody had any better luck ? This is a real
dissapointment as I thought we actually got a real constrained
fit routine with this release; oh well...

-- KY

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Re: Anybody tried constrained_min in 5.1 yet ? [message #11825 is a reply to message #11648]

Fri, 22 May 1998 00:00

D: Frieauff
Messages: 1
Registered: May 1998

Junior Member

Karl Young wrote:
>
> I tried the example given in the help file (including fixing the
> typo re. argument order in constrained_min call in the
> example) for constrained_min and it crashes IDL (5.1) under
> NT 4.0. Anybody had any better luck ? This is a real
> dissapointment as I thought we actually got a real constrained
> fit routine with this release; oh well...

The example will work if you set nobj to 3 rather than -4.
However, the solver seems to be rather slow and inaccurate.
There are alternatives in PD.

bye, DF

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